diff -r 00ad3bbbf024 -r 41967d32b54e config/debug/gdb.in
--- a/config/debug/gdb.in	Fri Sep 21 16:14:50 2012 +0200
+++ b/config/debug/gdb.in	Thu Oct 11 14:39:42 2012 +1000
@@ -119,6 +119,13 @@
     bool
     prompt "6.8a"
 
+config GDB_CUSTOM
+    bool
+    prompt "Custom gdb"
+    depends on EXPERIMENTAL
+    select GDB_7_0_or_later
+    select GDB_7_2_or_later
+
 endchoice
 
 config GDB_7_2_or_later
@@ -152,5 +159,19 @@
     default "7.0.1a" if GDB_V_7_0_1a
     default "7.0a" if GDB_V_7_0a
     default "6.8a" if GDB_V_6_8a
+    default "custom" if GDB_CUSTOM
+
+if GDB_CUSTOM
+
+config GDB_CUSTOM_LOCATION
+    string
+    prompt "Full path to custom gdb source"
+    default ""
+    help
+      Enter the path to the directory (or tarball) of your source for gdb,
+      or leave blank to use default CT_CUSTOM_LOCATION_ROOT_DIR/gdb
+
+endif # GDB_CUSTOM
 
 endif
+